Air service station



A. A. EWALD.

MR SERVICE STATION.

APPLICATIONHLED OCT. 21, 1920.

Patented May 16, 1922.

mw wu qwi Mw/ao (as vertical swinging, by means of a transverse NlTEfi STATEfi ARNO) ARTHUR EWALD, OF GARFIELD, WISCONSIN.

AIR snnvrcn s ra'rrorr.

Specification of Letters Patent.

Application filed 0etober 21, 1920. Serial No. 418,497.

To all whom it may concern Be it known that I, ARNO A. EWALD, a citizen of the United States, residing at Oakfield, in the county of Fond du Lac and State of Wisconsin, have invented certain new and useful Improvements in Air Service Stations; and I do declare the followin to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to air service stations for use in inflating automobile and other vehicle tires, and the principal object is to improve upon the construction shown in my pendin U. S. application, Serial No. 357,475 filed ebruary 9, 1920, in such a manner as to prevent any violent shock when the hose carrying arm returns to its normally raised position. v

A further object is to provide a counterbalancing weight for the hose-carrying arm and to provide a novel hood pivoted on the supporting standard and carrying said weight and arm, a portion of said hood being so constructed as to shield the dash pot or other shock absorbing device which is employed to cushion the upward swingin of the aforesaid arm.

ith the foregoing in view, the invention resides in the novel construction and combinationof parts hereinafter described and claimed, the descriptive matter being supplemented by the accompanying drawing.

Figure 1 is a vertical section of one form of my invention, parts being shown in elevation.

Figure 2 is an enlarged vertical section th rohgh the upper end of the device.

Figures 3 and 4 are horizontal sectional views as indicated by the lines 33 and 44 of Fig. 2.

In the drawings above briefly described,

the numeral 1 designates a hollow standard rising 'from a garage floor, sidewalk or other appropriate support 2, said standard having a cap or head 3 swiveled on its upper,

end. A hood 4 is positioned over the head 3 and pivotally connected therewith for pin 5 or any other suitable means, said hood being provided with a channeled arm 6 which depends therefrom at one side of the standard 1, the lower end of said arm 6 being provided with a counterbalancing weight 7 which normally holds the hood 4 in such a position as to retain the vertically swinging hose carrying arm 8 in an approximately vertical position as shown in Fig. 2. A tire inflating hose 9 extends through the arm 8 and thestandard 1 from a suitable source of pressure and the free end of said .hose depends from the free end of said arm. so that it may be pulled to lower said arm, thereby permitting application of the hose to valves of automobile tires. The moment the hose is released however, the weight 7 moves from the position shown in Fig. 1 to that illustrated in Fig. 2, thus returning all parts to their initial position and raising the hose entirely free of the ground or pavement, so that it will not become soiled.

To check the return of the arm 8 under the action of the weight 7, I mount a shock absorbing device on the swiveled head 3 and connect such device with the hood 4. In the present instance, this shock absorbing device is in the form of a dash pot whose cylinder 10 is pivoted at 11 to ears 12 which depend from the aforesaid head 3, the piston rod 13 of said dash pot being pivoted at 14 within the hood 4, the connectlons of the dash pot with said hood and head being such that the channel-shaped arm 6 of the former will cover and thereby shieldthe same when the several parts are in their normal position (see Figure 2).

The piston 15 of the dash pot has formed therethrough a central opening 16 through which extends the reduced lower end 17 of the piston rod 13, said piston rod being provided with a conical valve 18 at the juncture of its major and reduced portions, which valve is of a size to close the opening 16 under certain conditions. The lower extremity of the part 17 of the piston rod 13, extends below the piston 15 and is provided with a washer or other appropriate shoulder 19 against which a coiled spring 20 bears, the upper end of said spring acting on said piston and having a tendency to raise the same. The cylinder 10 may contain air, oil or any other speed checking agent. When the hose 9 Patented May 16, 1922.,

is pulled upon and the arm 8 is thus lowered, the hood 4 rocks on its pivot 5, thereby withdrawing the piston rod 13 to some extent from the cylinder 10. This raises the piston 15 in the cylinder and the speed checking. agent in the latter runs through the opening 16 as the piston travels upwardly, thereby allowing the several parts to move with little resistance. When the hose 9 is released however and the counterbalancing weight 7 comes into play to re-- turn the parts to normal position, the piston 15 is of course resisted in its downward movement by the contents of the cylinder 10, with the result that the piston rod 13 is forced downwardly with respect to said piston, thereby closing the valve 18, with the result that the piston can move downwardly only at a very slow rate of speed, allowed by leakage around the-valvezl8 and the piston 15. It thus follows that the several parts cannot return suddenly and thus injure any parts thereof.

In the foregoing, I have described one form of dash pot very specifically and have shown such form in the drawings, but it is to be understood that any other preferred construction could be employed if desired. Furthermore, although I intend in most instances to form the hood 4, arm 6 and weight 7 out of two sections secured together, it is obvious that other details of construction could be followed should occasion demand. v

I prefer to employ a water supply hose 42 leading from a water pipe 43 within the standard, said hose 42 bein equipped with a suitable valve 44 so that t e water supply may be turned on or off at will, permitting water to be supplied to the radiators of automobiles. From the foregoing, taken in connection with the accompanying drawings, it will be seen that I have provided a highly eflicient and desirable device for carrying out the objects of the invention, particular attention being directed to the fact that novel provision is made to absorb the shock when the counterbalancin means (either spring or weight) returns t 1e hose-carrying arm to normal position. The provision of the hood 4 and arm 6, in connection with the associated dash pot or the like, are also highly important, since these parts not only shield the dash pot when the several parts are in normal position, but the hood prevents the entrance of rain, snow and the like, into the upper end of the standard 1.

Since probably the best results may be obtained from the details disclosed, such details may be followed if desired, but within the scope of the invention as claimed, numerous minor changes may well be made.

I claim:

1. A tire inflating device comprising a ing a tire inflating hose, counterbalancing 7 means for returning said arm to a normally raised position after use, and means movable bodily with said head for checking and cushioning the return movement of said arm.

2. A tire inflating device comprising a standard, a shock absorbing device at one side of said standard near its upper end, a hood extending over said upper end of the standard and pivoted thereto, said hood hav: ing connection wit-h said shock absorbing device, an arm normally rising from said hood and carrying a tire inflating hose, a channel-shaped arm depending from and movable bodily with said hood, said channeled-shaped arm normally extending over and shielding said shock absorbing device, and a counterbalancing weight carried by said channel-shaped arm.

3. A tire inflating device comprising a standard, a head swiveled on the upper end of said standard, a hood positioned over said standard and head and pivoted to the latter to swing in a vertical plane, an arm normally rising from said hood and carrying a tire inflating hose, a channel-shaped arm depending fromsaid hood at one side of said head and standard, the lower end of said channelshaped arm having a counter-balancing weight for returning the hood and hosecarryin 'arm to their initial positions .after use, and a' shock absorbing device connected with said head and said channel-shaped arm for cushioning the return movement of the aforesaid parts, said shock absorbing device being normally covered and shielded by said channel-shaped arm.

4. A tire inflating device comprising a tubular standard having an opening in its upper end, a tire inflation hose in said standard extending outwardly through said opening, a hood over said standard and pivoted thereto for swinging in a vertical plane, said hood serving to exclude weather disturbances from saidyopening, an arm normally rising from said hood and carrying said tire inflation hose, a second and shorter arm depending from said hood at one side of the standard, and a counterbalancing weight at the lower end of said second arm.

5. A tire inflating device comprising a.

standard,a head swiveled on the upper end of said standard and havin an opening in its upper end, a tire inflating hose within said standard extending outwardly through said opening, a hood over said head and standardpivoted to the former for swinging in a vertical plane, said hood serving to exclude weather disturbances from said opening, an arm extending from said hood and carrying said tire inflating hose, a sec- 0nd and shorter arm depending from said hood at one side of the head, and a counterbalancing Weight on said second arm.

6. A tire inflating device comprising a tubular standard having an opening in its upper end, a tire inflating hose in said standard extending outwardly through said opening and a selt-raising arm carrying-the outer portion of said inflating hose, the innerend in a %n testimony whereof I have hereunto set 15 my hand.

ARNO AiRTHUR EWALD. 

